[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Anthony Wong]

** Changed in: linux (Ubuntu)
   Status: In Progress => Fix Released

** Changed in: hwe-next
   Status: In Progress => Fix Released

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Vivid:
  Fix Released

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/trusty-security/linux-lts-vivid

** Branch linked: lp:ubuntu/trusty-proposed/linux-lts-vivid

** Branch linked: lp:ubuntu/trusty-updates/linux-lts-vivid

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Released

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 3.19.0-66.74

---
linux (3.19.0-66.74) vivid; urgency=low

  [ Seth Forshee ]

  * Release Tracking Bug
- LP: #1604153

  * CVE-2016-1237
- posix_acl: Add set_posix_acl
- nfsd: check permissions when setting ACLs

  * changelog: add CVEs as first class citizens (LP: #1604344)
- use CVE numbers in changelog

  * CVE-2016-5243 (LP: #1589036)
- tipc: fix an infoleak in tipc_nl_compat_link_dump

  * CVE-2016-4470
- KEYS: potential uninitialized variable

  * CVE-2016-4794 (LP: #1581871)
- percpu: fix synchronization between chunk->map_extend_work and chunk
  destruction
- percpu: fix synchronization between synchronous map extension and chunk
  destruction

  * qeth: delete napi struct when removing a qeth device (LP: #1601831)
- qeth: delete napi struct when removing a qeth device

  * arm64: statically link rtc-efi (LP: #1583738)
- [Config] Link rtc-efi statically on arm64

  * linux: Homogenize changelog format across releases (LP: #1599562)
- Revert "UBUNTU: [debian] BugLink: close LP: bugs only for Launchpad urls"
- [Debian] git-ubuntu-log -- switch to bug order
- [Debian] git-ubuntu-log -- fix empty section formatting
- [Debian] git-ubuntu-log -- output should be utf-8
- [Debian] git-ubuntu-log -- handle invalid or private bugs
- [Debian] git-ubuntu-log -- wrap long bug and commit titles
- [Debian] git-ubuntu-log -- ensure we get the last commit
- [Debian] git-ubuntu-log -- prevent bug references being split
- [Debian] git-ubuntu-log -- git log output is UTF-8

  * exercising ptys causes a kernel oops (LP: #1586418)
- devpts: fix null pointer dereference on failed memory allocation

  * the kernel hangs when reboot or shutdown on a lenovo baytrail-m based
machine (LP: #1597564)
- usb: xhci: Makefile: move xhci-pci and xhci-plat-hcd after xhci-hcd

  * [i915_bpo][SKL] Display core init/uninit updates (LP: #1595803)
- SAUCE: i915_bpo: drm/i915: Extract a intel_power_well_enable() function
- SAUCE: i915_bpo: drm/i915: Extract a intel_power_well_disable() function
- SAUCE: i915_bpo: drm/i915/skl: Making DC6 entry is the last call in 
suspend
  flow.
- SAUCE: i915_bpo: drm/i915: Kill intel_runtime_pm_disable()
- SAUCE: i915_bpo: drm/i915/gen9: csr_init after runtime pm enable
- SAUCE: i915_bpo: drm/i915: use correct power domain for csr loading
- SAUCE: i915_bpo: drm/i915/gen9: Don't try to load garbage dmc firmware on
  resume
- SAUCE: i915_bpo: drm/i915/skl: Removed assert for csr-fw-loading check
  during disabling dc6
- SAUCE: i915_bpo: drm/i915: fix the power well ID for always on wells
- SAUCE: i915_bpo: drm/i915: fix lookup_power_well for power wells without 
any
  domain
- SAUCE: i915_bpo: drm/i915: Make turning on/off PW1 and Misc I/O part of 
the
  init/fini sequences

 -- Seth Forshee   Tue, 19 Jul 2016 09:07:26
-0500

** Changed in: linux (Ubuntu Vivid)
   Status: Fix Committed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-1237

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-4470

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-4794

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-5243

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Released

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:

[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Shrirang Bagul]

Verified, passed more than 15 times of suspend/resume by manually closing & 
opening the lid.
Display and audio both working fine after resume.

Test configs:
Intel Core i7-6600U CPU with Skylake ULT GT2 graphics

The kernel in proposed solves the problem.

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Committed

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Shrirang Bagul]

** Tags removed: verification-needed-vivid
** Tags added: verification-done-vivid

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Committed

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Seth Forshee]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
vivid' to 'verification-done-vivid'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-vivid

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Committed

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Anthony Wong]

** Changed in: hwe-next
   Status: New => In Progress

** Changed in: hwe-next
 Assignee: (unassigned) => Shrirang Bagul (shrirang-bagul)

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Committed

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Tim Peeters]

Shrirang, yes I managed to install the kernel from comment #4.

tim@XPS-13-9350:~$ cat /proc/version
Linux version 3.19.0-64-generic (root@tucker) (gcc version 4.6.3 (Ubuntu/Linaro 
4.6.3-1ubuntu5) ) #72 SMP Thu Jun 30 18:23:54 CST 2016

I have been testing that kernel for 2 days, including closing the lid
several times (that gave me the issue before), and I have not
encountered any more audio problems.

In comment #6 I mentioned a problem with the mouse cursor, but it
happened only once and I could not reproduce it any more. It may be an
unrelated issue.

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Committed

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Shrirang Bagul]

** Tags added: originate-from-1588711 somerville

** Changed in: linux (Ubuntu)
   Importance: Undecided => Critical

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Committed

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Kamal Mostafa]

** Changed in: linux (Ubuntu Vivid)
   Status: New => Fix Committed

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  Fix Committed

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Tim Gardner]

** Also affects: linux (Ubuntu Vivid)
   Importance: Undecided
   Status: New

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Vivid:
  New

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Shrirang Bagul]

Tim, if you wish to test the kernel mentioned in comment# 4, remove the 
existing 3.19.0-64-generic #72~14.04.1-Ubuntu kernel installed from your system.
Use these commands to install the experimental kernel -

$ sudo dpkg -i linux-headers-3.19.0-64_3.19.0-64.72_all.deb
$ sudo dpkg -i linux-image-3.19.0-64-generic_3.19.0-64.72_amd64.deb
$ sudo dpkg -i  linux-image-extra-3.19.0-64-generic_3.19.0-64.72_amd64.deb

Reboot the system into the newly installed kernel & verify the kernel
version-

$ cat /proc/version
Linux version 3.19.0-64-generic (root@tucker) (gcc version 4.6.3 (Ubuntu/Linaro 
4.6.3-1ubuntu5) ) #72 SMP Thu Jun 30 18:23:54 CST 2016

Try suspend/resume at several times to check if the audio issue is
resolved.

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Tim Peeters]

Note that I am testing on Trusty. Should this bug be nominated for
Trusty too?

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Tim Peeters]

I experienced the bug with the following kernel:
Linux XPS-13-9350 3.19.0-64-generic #72~14.04.1-Ubuntu SMP Fri Jun 24 17:59:48 
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux


I downloaded all the deb files from your link and tried to install them, see 
http://paste.ubuntu.com/18442758/ but linux-tools failed. I did not understand 
why and rebooted anyway to try. After rebooting I think I still had the old 
kernel and standby got more broken. Closing the lid and then opening it did not 
switch the screen back on and I had to use the power button to switch the 
laptop off and on.

It seems like the package manager could resolve these issues, see
http://paste.ubuntu.com/18442801/

After that I tested with the new kernel
Linux XPS-13-9350 3.19.0-64-generic #72 SMP Thu Jun 30 18:23:54 CST 2016 x86_64 
x86_64 x86_64 GNU/Linux
and I closed/opened the lid a few (4) times. The sound still works fine, but at 
least once the mouse pointer disappeared for me. I could still use the touchpad 
to move the cursor and click things, but the cursor was invisible so I did not 
know where the cursor was located.

I will test more to see if that happens more often.

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Shrirang Bagul]

Verified the test kernel 3.19.0-64-generic
(http://people.canonical.com/~shrirang-bagul/bugs/lp1595803/)

Test configs:
Intel Celeron CPU N3050 - Braswell graphics
Intel Pentium CPU N3700 - Braswell graphics
Intel Pentium CPU 3825U - Broadwell graphics
Intel Core i5 - Broadwell GT2 (Intel HD graphics 5500)

Tests:
1. Suspend/resume by close/open lid (more than 10 iterations)
Result: Passed. Display and audio both working fine after resume.

2. Certification tests - Graphics functions
Result: Passed

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Shrirang Bagul]

Tim, the description on the dell community forum is not very detailed.
However, if you have time, please try this kernel built to fix this issue.

http://people.canonical.com/~shrirang-bagul/bugs/lp1595803/

This kernel is based on Ubuntu-3.19.0-64.72

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Tim Peeters]

I found this bug via a link in http://en.community.dell.com/techcenter
/os-applications/f/4613/t/19682246?pi9=2

If it is the same bug, then I am experiencing it on trusty with kernel
3.19.0-61-generic #69~14.04.1-Ubuntu SMP Thu Jun 9 09:09:13 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux so it would need to be fixed there too.

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1595803/+subscriptions

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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Shrirang Bagul]

Verified passed more than 10 times of suspend/resume by close/open lid.

Display and audio both working fine after resume.

Test configs:
Intel SKL-U graphics
Intel SKL i7-6500U graphics
Intel SKL i5-6200U graphics

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
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[Kernel-packages] [Bug 1595803] Re: [i915_bpo][SKL] Display core init/uninit updates

[Shrirang Bagul]

** Changed in: linux (Ubuntu)
   Status: Incomplete => In Progress

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Title:
  [i915_bpo][SKL] Display core init/uninit updates

Status in linux package in Ubuntu:
  In Progress

Bug description:
  At the moment, our i915_bpo driver on Vivid (kernel version:
  Ubuntu-3.19.0-62.70) lacks certain patches which fix the display core
  init/uninit sequence esp. handling dmc firmware loading and runtime-
  pm. Following patches from v4.5-rc1 address these issues on SKL.

  * e8ca932 drm/i915: Extract a intel_power_well_enable() function
  * dcddab3 drm/i915: Extract a intel_power_well_disable() function
  * 0a9d2be drm/i915/skl: Making DC6 entry is the last call in suspend flow.
  * 18a04a7 drm/i915: Kill intel_runtime_pm_disable()
  * ebae38d drm/i915/gen9: csr_init after runtime pm enable
  * 01a6908 drm/i915: use correct power domain for csr loading
  * bffbcd9 drm/i915/gen9: Don't try to load garbage dmc firmware on resume
  * ca1283d drm/i915/skl: Removed assert for csr-fw-loading check during 
disabling dc6
  * 56fcfd6 drm/i915: fix the power well ID for always on wells
  * fc17f22 drm/i915: fix lookup_power_well for power wells without any domain
  * 2f693e2 drm/i915: Make turning on/off PW1 and Misc I/O part of the 
init/fini sequences

  These patches also fix OEM bug related to audio not working after
  suspend by close/open lid.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1595803/+subscriptions

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